background: antigen b (agb) is frequently used for immuno-diagnosis of hu-man cystic echinococcosis (ce). echinococcus granulosus agbs show a high degree of genetic variability in different hosts or in different ce endemic areas. the present study aimed to evaluate the genetic polymorphisms of encoding antigen b2 gene (agb2) among different iranian isolates of e. granulosus. methods: a total of...

background: there is a growing concern on the impact of the presence of extended-spectrum β-lactamase (esbl) producing escherichia coli isolated from animals on public health. objectives: the aim of this study was to investigate the presence of three classes of esbl genes in e. coli isolates from sheep and broilers at a slaughter in urmia region, iran. methods: a total of 111 e. coli isolates w...

During luteolysis in sheep, episodic pulses of oxytocin (OT), contributed by the neurohypophysis and the corpus luteum (CL), stimulate uterine luteolytic pulses of prostaglandin (PG) F2 alpha via endometrial OT receptors. To distinguish relative contributions of neurohypophysial and luteal OT, ovariectomized sheep were given estradiol-17 beta (E) and progesterone (P) to stimulate levels during ...

Enterohemorrhagic Escherichia coli (EHEC) of the O157:H7 serotype is a worldwide zoonotic pathogen responsible for the majority of severe cases of human EHEC disease. The aim of the present study was to investigate the prevalence of E. coli O157: H7/NM in raw meat samples from two provinces of Iran. During a period from March 2010 to March 2011. Two hundred and ninety five raw meat samples were...

Genetic improvement programs may improve disease resistance in animal production. The best-characterized genetic control of disease resistance and immune response in animals is the one associated with the Major Histocompatibility Complex (MHC). The ovine lymphocyte antigenof DRB1 gene encodes cell surface glycoproteins that initiate immune responses by presenting processed antigenic peptides to...

Six rumen-fistulated and defaunated wethers were fed twice daily a pelleted diet of barley and dehydrated lucern at a rate of 50 g dry matter/kg body weight °-!5. Two months later, the sheep were divided into three equal groups. Each group was then inoculated in the rumen with one of the following three genera of protozoa : Polyplastron multivesiculatum (P), Entodinium sp. (E), or lsotricha pro...

background: escherichia coli is a commensal-pathogenic organism, which includes a wide range of strains. despite several advanced molecular-genomic technologies for detecting and identifying different strains of e. coli, enterobacterial repetitive intergenic consensus polymerase chain reaction (eric-pcr) technique is a quick, sharp and cost effective fingerprint method. the major purpose of the...

Escherichia coli O157:H7 and Salmonella are significant foodborne pathogens that can be found in the feces and on the hides of meat animals. When hides are removed during the harvest process, the carcass and subsequent meat products can become contaminated. Camels, cattle, sheep, and goats are harvested for meat in Riyadh, Saudi Arabia. The prevalence of E. coli O157:H7 and Salmonella are unkno...

Meat inspection records in abattoirs located in Torbat-e-heidarieh (northeast Iran), from 18 May 2009 to 30 May 2015, were used to determine the prevalence of liver fluke diseases in sheep and cattle in the region. A total of 1004858 livestock including 867015 sheep and 137843 cattle were slaughtered in the 6-year period. Dicrocoeliosis, fasciolosis and hydatidosis were responsible for 2%, 1.92...